Reserve-thread mechanism for self-acting spinning mules



Aug. 31 1926.

- R. A. DUPONT RESERVE THREAD MECHANISM FOR SELF ACTING SPINNING MULES Filed April 18} 1924 Patented Aug. 31, 1926.

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UNITED STATJEe PATENT Mm 7 RENE ABEL DUPONT, OF GLAGEON-NORD, FRANCE.

RESERVE-THREAD MECHANISM FOR SELF AGTING SEINNING MULESa Application filed April 18, 1924, Serial No. 707,455, andin France April 23, 1923.

My invention relates to an improved reserve thread mechanism for self-acting spinning mules, the purpose of which is to main tain the strictly necessary length of reserve thread unwound on each cop of the mule, when the carriage reaches the end of its inward run.

The present invention refers to improvements which essentially concern the arrangement of the ratchet mounted on the rocking lever and causing, by a suitable transmission device, the rotation. of the screw ofthe quadrant of the mule, so as to lower the nut to which is attached the chain of the barrel on the carriage, and in this manner, reduce the 7 available thread to its normal length. It

has also for its object the suppression of the large operating lever and its replacement by an extension of the oscillating beam, the free end of which carries a roller. My invention comprises also various other details of construction of the apparatus which will be described hereafter.

Referring to the annexed drawings Fig. 1 is a general view of the rocking beam carrying the operating lever.

Fig. 2 is a front view of the operating lever.

Figs. 3 to 7 are detail views.

Fig. 8 shows a variation in the operation of the ratchet wheel.

My invention relates to an improvement on the structure shown in my Patent, No. 1,200,820, of October 10, 1916, and like the structure therein aims to have neither too much nor too little reserve thread between the cops and the drawing rolls owing to the cop spindleshaving made too few turns at the beginning of the cop when its diameter is small, to wind up the fixed length of thread drawn out by the carriage in its outward run; or owing to the cops: when they are nearly full, tending to consume more thread-than has been drawn out by the carriage. Thecop spindles rotate a constant speed independent of the diameterofthe cop and in my cited patent I have invented certain mechanism ,for- .automaticall regulating the; amount of this reserve-thread employing a curved lever 29' and mechanism.

employing a hinge 92 operated by a screw 93 which had tobe turned by the operator to open or close thehinge in accordance with the amount of thread being, wound on the cops.

By my present invention I avoid the use of a hinge by changing certain of'the struc ture shown in the patent and make the mule entirely automatic in its control of the reserve thread.

As is seen in Fig. 1, the beam 22 rocks on an axis 22 at one end and it is provided, on the opposite end, with a counter weight 186. It is enlarged forward of the axis 22 and the upper portion, of thisen largement carries a pawl 24, while, uponits lower portion, is hinged the rod 23, connected at its other end to the rocking beam 20, which is the beam that is engaged by the roller of the counter-taller arm so as to act at the required moment upon the beam 22' to cause a take up of the excess reserve thread.

In order to facilitate the falling'back of the beam 22 to its inoperative position, the pawl 24: carries on one side, a rounded portion 24" (Fig. 4) intended to climb up the slope 137 of a member 137 (Figs. 5 and 6) fixed against the bracket 0f the support 77 (Fig. 1). The purpose of this arrangement is to free the ratchet 24t from the teeth of the ratchet wheel 25, whenthe beam 22 falls back to its non operative position, on the one hand under the influence of the roller 29 of the operative lever 29 meeting the slope 88-39 and on the other hand under the action of the counterweight 136. The large hook shaped lever 29 in my prior United States PatentNo. 1,200,820, is replaced by arr-extension 29 ofthe beam 22 (Fig. 1) terminated by the'roller29. lVhen there is an mess of reserve thread, that is, when the roller of the counter-faller arm has butted against the curved: lever 20, the latter oscillates and, by means of the con necting rod 23 the beam 22 rocksalso; the roller 29 comes then'into a lowered position proportionalto the. excess of reserve thread, and into the path of the carriage slope 38, is lifted and in turn, lifts'the operating- 1ever 29,

For the purpose of doing away with the clutch sleeve 52 and the counter-clutch sleeve 56 described in the precited patent, I use here a latch 138 (Figs. 1 to 7 hinged at 138, which maintains the beam 22 in its resting position by means of a hook 138 coming into engagement upon a pin 139 fixed to the beam.

On the slope or support 39 is fixed a bracket 140 (Fig. 1), carrying'a'screwnl4l provided with a lock-nut, and which buts against the tail 138 of the latch, so that it is only when the carriage is near he cops that the beam and lever can oscillate.

The support 39 carrying the roller 38 described in my prior Patent'No. 1,200,820, whose function was'to raise the hookshaped lever 29 and 29 have, been replaced by the support 39 with the sloping member'38' cast integrally. J

The support 39 is fixedto a bracket 40 extending from the carriage and therefore moves with the latter during its inward and outward runs. It also carries the pin 132 of the circular ratchet 131 and the pin 1030f the compensatinglever 102.

The hook shaped lever29 which is shown in my prior Patent No. 1,200,820,as pivot-- and a rocking lever 144, which replaces the pinion 58 and carries-the ratchet 24.

hen the carriage ends its inward .run with too much reserve thread, it is due to the fact 'that'the counterfalleris too' high in approaching the cylinders. This counterfaller 1 is carried by the guides 2 fixed onthe rod 3 upon which is also mounted a lever- 91 carrylng at its extremity the roller 19. When the reserve is normal the roller the beam or curved lever 20. The latter, through connecting rod 23 and connection 150 pivoted at 151 to the'beam-22, "tipsthe 7 big lever 29, 22 to the positions shown in dotted lines at 29 and 29. At this time,

the roller '29 is in a downward position, having moved a distance proportional to the excess of reserve'threadr VVhilethe big lever 29 is tipping downwardly, the pawl 24 lride'sover the teethfof the ratchet 25, the latter'being located against the beanr22 or is amplified through suitable gearing and is transmitted bymeansjof chains 44 and 45 to the screw 9 of the quadrant 6 of the mule. With the'ratchet '25 depending from the axis 59 and mounted in a housing piece 60 carried by 61, it is only necessary to use the vertical chain 45 shownin Fig. 8. The cam member 137 mounted against the support-77 near therocking beam, operates to freethe pawl 24 from the ratchet teeth 25 when the beam'22 has fallen back to itsposition of rest and isthen locked in place by means of the latch 138 'which places itself above the axis, 139 on the beam 22. Two results follow when the pawl is freed from the ratchet, the fall of the beam 22 is facilitated and downward movementof the lever 29, after passing beyond 38, is avoided.

The'lever 29 is articulated so that it may be folded on itself if for any reason it should-be lowered while the carriage is on its outward run. For this purpose'the arm 145 is attached to the beam 22'and carries an extension 146. The articulation is shown at 147, 148 the parts of the lever being held together by means of the pin 149'. It Willbe seen that should the roller 29 be lower than its position of rest when the carriage makes its inward run, the piece 140 would encounter it and would force it to assume its normal positionby severing the pin 149.

I claim z- 1 I 1. A reserve thread mechanism for self acting spinning mule-s comprising: a carriage. a weighted beam, a pawl carried by said beam, an operating lever extending the said weighted beam, a roller carried by the said operating lever, and a sloping elementon the carriage to actuate the lever at the required moment; I

2. A reserve thread mechanism for selfacting spinning mules comprising: a' carriage, a weighted beam,- a pawl carried by the said beam, a fixed slope, a rounded portion on the pawl intended to climb upon the fixed slope to free the pawl, an operating lever extending the said weighted beam, and

a sloping element on the carriage to actuate the roller at the requiredmoment.

3. A reserve thread mechanism for self acting spinningmules, comprising a carriage "with an abutment screw, alweighted beam, a rocking latch with a hook upon which buts the "screw of the carriage to maintain thebeam in its position of rest, a pawl carried by the beam, an operatinglever extending the said weighted beam, and a a ratchet wheel engaged with the said pawl sloping element on the carriage to actuate the axis of which is mounted in a support 10 the roller at the required moment. in the front of the frame, and a connecting 4 In a reserve thread mechanism for elf- I'OCl connected to thfi crank and t0 the OSCll- 5 acting spinning mules, the combination with latmg W 0f the ratchet;

a frame of a weighted beam, a crank with In m l y that I C111m the foregoing oscillating motion operated by the said as y lnventlon I f slgned y nameheam, a pawl carried by an oscillating lever, RENE ABEL DUPONT 

